I contacted a local reseller of ESS Technology parts. I'm looking for the datasheets on the ES9018 Sabre32 Reference DAC, and the ES9102 ADC.
What I'm curious about, for the DAC at least, is the format of the I2S signal when running it in mono mode. If I have to separate out the left and right channels from a stereo stream, that'll require more parts. It'd be nice if I could just split the stream as is, and send copies to two different DACs. Then tell the DAC to either use the first or second stream. Hard to guess without the datasheet, and ESS doesn't have them for download from their site (that I can see).
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